While the availability of Reader View is somewhat noticeable visually, a screen reader user won't be aware of this unless they explicitly explore the toolbar. In bug 1425541, I exposed a "reader" accessibility object attribute to allow screen readers to access this information programmatically. However, this was never actually used by any screen readers. Supporting this would require screen readers to implement a change specific to Firefox, which is not ideal. In bug 1576509, I added a function to announce a message for screen reader users for cases like these. I propose to remove the reader object attribute and instead announce a message using this new function.
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While the availability of Reader View is somewhat noticeable visually, a screen reader user won't be aware of this unless they explicitly explore the toolbar. In bug 1425541, I exposed a "reader" accessibility object attribute to allow screen readers to access this information programmatically. However, this was never actually used by any screen readers. Supporting this would require screen readers to implement a change specific to Firefox, which is not ideal. In bug 1425541, I added a function to announce a message for screen reader users for cases like these. I propose to remove the reader object attribute and instead announce a message using this new function.